| Description |
Cryptlib by Peter Gutmann is a security toolkit that allows even less experienced programmers to add strong encryption and authentication services to their programs, security features that are becoming more and more indispensable. The library attempts to hide the low-level details of encryption/decryption and authentication from programmers, allowing them to quickly make their projects more secure. Some of the symmetric encryption (private key) and authentication algorithms that cryptlib supports include the following:
ž AES (Rijndael)
ž Blowfish
ž DES, 3DES
ž RC2, RC4, RC5
The following hash algorithms are available in the library:
ž MD2, MD4, MD5
ž RIPEMD-160
ž SHA
It offers services such as:
ž S/MIME
ž SSL/TLS
ž ssh
It features various hashed message authentication code algorithms:
ž HMAC-MD5, HMAC-SHA, HMAC-RIPEMD-160
Finally, asymmetric (public/private key) encryption algorithms such as the following are available:
ž Diffie-Hellman, DSA, RSA
cryptlib can also be used with a variety of crypto devices (for example, Fortezza cards and Smart cards).
The library is free if used in personal, freeware, or shareware projects. The library is written in C. ActiveX and C++ wrappers are provided. The project is OSI Certified Open Source Software. |
| Supported languages: English |
| Supported OS: Win 3.1x, Win95, Win98, WinME, WinXP, WinNT 3.x, WinNT 4.x, Windows2000, Windows2003, Unix, Linux |
| Installation: Install and Uninstall |
| Requirements: win |
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| Release info |
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03/10/2004
Major Update
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Changes:
The Unix randomness-gathering code now checks for and uses EGD/PRNGD if available.
Requirement that cryptlib be built via a network share under Windows is removed.
HTTP keyset access: server URL is given when keyset is opened as with other types, and a key ID is given when reading individual keys.
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| Permissions |
cryptlib is distributed under a dual license that allows free, open-source use under a GPL-compatible license and closed-source use under a standard commercial license. The GPL-compatible license (a.k.a. the Sleepycat license) is given below. A good overview and background behind the Sleepycat license, which also applies for cryptlib, is also available.
Copyright 1992-2004 Peter Gutmann. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Redistributions in any form must be accompanied by information on how to obtain complete source code for the cryptlib software and any accompanying software that uses the cryptlib software. The source code must either be included in the distribution or be available for no more than the cost of distribution, and must be freely redistributable under reasonable conditions. For an executable file, complete source code means the source code for all modules it contains or uses. It does not include source code for modules or files that typically accompany the major components of the operating system on which the executable file runs.
THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
If you're unable to comply with the above license then the following, alternate usage conditions apply:
Any large-scale commercial use of cryptlib requires a license. "Large-scale commercial use" means any revenue-generating purpose such as use for company- internal purposes, or use of cryptlib in an application or product, with a total gross revenue of over US$5,000. This allows cryptlib to be used in freeware and shareware applications, for evaluation and research purposes, and for non-revenue-generating or personal use without charge. In addition the author reserves the right to grant free licenses for commercial use in special cases (for example where there is a general benefit to the public), contact the author for details if you think you qualify. |
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